Which organ is the largest in the human body?

The skin is the largest organ in the human body, serving as a protective barrier that covers the entire exterior. It plays crucial roles in regulating body temperature, providing sensory information, and protecting against pathogens and environmental hazards. The average adult's skin can cover an area of about 1.5 to 2 square meters, making it significantly larger than other organs.

Although the liver, lungs, and heart are vital organs with important functions, they do not come close to the skin in terms of surface area. The liver is the largest internal organ, while the lungs are a pair of organs, and the heart is relatively small and central in relation to the body's overall size. Consequently, the skin's extensive coverage and multifunctional role establish it firmly as the largest organ of the human body.